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Science Lesson
1008-0031
2000 Issue Z2
guan yu jiao xue she ji gao du zhe
..............
page:29
shuo shuo lian tong qi qiu zhe jie ke
lu pei zuo
..............
page:13-14
21 shi ji ke xue jiao yu ying gai jiao gei xue sheng shi me
sheng jing jing
..............
page:16-17
gui zhou sheng qi xiang tai jian wen
gui yang shi shi yan xiao xue ge lun bu xiao zu
..............
page:45
zi ran ke zhong yu neng zi zi ran ran di shang liao
tian jing
..............
page:57
liu mo geng ke xue jiao yu si xiang dui yu wen jiao gai de qi shi
ai guo qing ; wang ping ; li zuo feng
..............
page:67-69
zen yang rang xue sheng kan de jian shui de fu li
li ran
..............
page:64-65
shi me shi hou chu shi ke jian zui you xiao guan yu er duo de ke xue ke jian chu shi shi ji de tao lun
zhou qiang
..............
page:34-35
guan yu mo ca li yi ke de si kao tan zi ran ke ke tang jiao xue de mu de
peng ming hui
..............
page:40
dui lian tong qi qiu yi ke de liang dian yi wen
wei qiu shi
..............
page:18-19
bu yao yin zhui qiu ke xue xing er hu shi qi meng xing
xue zhong huai
..............
page:56
qian shou yu fang shou jie guo da bu tong mo ca li yi ke de jiao xue ti hui
dong xue mei
..............
page:43
diao zheng gai jin chong shi ren jiao ban di jiu ce zi ran jiao xue tan
huang xu dong
..............
page:48
shuo shuo la zhu hui xi mie ma ? yi ke de she ji si lu
zhang ding er
..............
page:8-9
huan ge si lu jiao luan shi de xing cheng
zhang yi
..............
page:28
bu zai liu lei de hong la zhu
zhang liang
..............
page:94
lai zi da xiong mao gu xiang de bao gao
tang xi yang
..............
page:80-83
zen yang zhi zuo yan dian qi
..............
page:72
zi zhi qian shui ting yan zheng fu chen de mi mi
wang hu
..............
page:66
duan qi tian qi yu bao zhi zuo
zhao zhao
..............
page:70
gu ti re zhang leng suo shi yan de gai jin
jiang xue zhu
..............
page:65
gai ge : wo men qi dai shi me yang de ke xue jiao yu
zhang dong liang
..............
page:36
ge ye shui neng he
..............
page:83
dong wu yu huan jing
..............
page:76-77
zi ji zhai de guo shi tian
zhao xiao li
..............
page:50-51
zen yang cai neng shi shui zheng fa kuai guan yu yi zu xue sheng shi yan de gai jin
shen yong ming ; yao chun hui
..............
page:64
yi ci xing yong pin , hou huan wu qiong
..............
page:84-85
wo ting kong qi zhan ju kong jian ke hou de gan shou
zheng zhong
..............
page:50-51
kai fa li yong di si zhong sen lin
..............
page:84
la zhu hui xi mie ma ? ke tang shi lu
zhang ding er
..............
page:5-8
chuan dong zhuang zhi yi ke de nan dian tu po
sun jun hui
..............
page:42
xin qian nian ji : la ji neng xiao mie ma ?
..............
page:85
fa hui shi yan shi de fu she zuo yong
xu zhi xiang
..............
page:61
chong man ji qing he yong qi de ke tan zhang ding er lu pei zuo de liang jie zi ran ke
da he
..............
page:15-16
ta yong yuan huo zai wo men de xin li mian huai jing ai de liu mo geng lao shi
jiang yun zhen
..............
page:22-23
ke xue jiao yu zhong chuang zao xing si wei de pei yang
xu jie
..............
page:31-32
guan yu ping tun ji dan shi yan de bu chong
shi hui zhen
..............
page:59
hu die he fei e
..............
page:97
ru he rang di li bu chang cao
wang ling hua
..............
page:49
lei qie er ka sen yu di qiu ri
..............
page:27
lian xi shi ji jin xing jiao xue li tan
ding er
..............
page:53
zhong nian ji zi ran jiao xue mu de zhi wo jian
li bao zhen
..............
page:33-34
shui jiang cheng wei zhong guo de jia jia lin
..............
page:86
dang dai guo ji zhong xiao xue ke xue jiao yu fa zhan de qu shi ji qi qi shi
hao jing hua
..............
page:24-27
wo jiao er nian ji de xue sheng ren shi kong qi
ji zuo
..............
page:44-45
si nian qian de na chuan jiao yin
tian shen
..............
page:94
kong qi re zhang leng suo shi yan zhuang zhi
bi qi guo
..............
page:64
re shi zen yang gai bian wu zhi de
..............
page:75
jie shao san li zi ran dui bi shi yan
chang hong ling
..............
page:60
zuo zuo yu huan jing
guo wei
..............
page:96
ri ben shi yong chao lin jie shui zuo xiao du ji
..............
page:87
zi ran ke xue jiao yu ke xue jia de yao lan zai 21 shi ji ke xue jiao yu yu liu mo geng ke xue jiao yu si xiang yan tao hui shang de jiang hua
li de ren
..............
page:20-22
yi chuan xue
..............
page:77
guan yu kong qi cheng fen shi yan de shang que
chen zhi hong ; ma ying
..............
page:59
zen yang cai neng rang yu fei de geng hao
wang xiao juan
..............
page:49
jiu cai ke fang zhi ji wen
zhou zuo
..............
page:95
la zhu zai shui zhong ran shao
..............
page:73
zhi wu jin zhi ye de zhi qu yu biao ben jin zhi
wang ming zuo
..............
page:58
yang qi jiao xue zhong de liang ge wen ti
lin guo qing ; zhao shao bing
..............
page:41-42
luan shi de xing cheng de shi yan gai jin
xu zhi xiang
..............
page:66
kong qi qu dong de qi che
..............
page:86
yan wei li shi fu shang lai liao huan shi chen zai bei di
xu ju
..............
page:47
gu shi yu xiao xue zi ran jiao xue
ling zhao xing ; liang en rong ; liang zi hong ; liang zhu zuo
..............
page:69
dao xiao yuan qu guan cha ma yi
huang pei hui
..............
page:50
zhi dao xue sheng guan cha zuo zuo bian qing wa
xie hua ying
..............
page:48
yi jie ju you zi ran jiao xue zhi dao si xiang de shu xue ke
kong ling qiang
..............
page:69
bai jing chang wei zuo de sheng huo xi xing yu bao hu
dai nian hua
..............
page:78-79
tan jiu xiao xue ke xue jiao yu de ling hun
yang xiao wei
..............
page:30-31
bu zuo de yi ge xiao shi yan
xiong yin qiu
..............
page:60
pei yang chuang xin yi shi jia qiang tan jiu zhi dao
chen dai chun
..............
page:37
shi yan jiao xue zhong de tu shi dao xue
song lian ying
..............
page:62-63
dong wu ru he yun dong
..............
page:74-75
yao zhu yi shi yan xian xiang
deng jia feng ; peng hui nian
..............
page:58
ke yuan ji cui
..............
page:88-93
fa hui nong cun zi ran jiao xue you shi pei yang nong cun ke ji chuang zao ren cai
fan li xiong ; xue chun xuan
..............
page:54-56
fan she tu xiang shi zen yang bei dian dao de
..............
page:73
zhi qian xuan tie de mi mi
ji qing ge
..............
page:95
lian tong qi qiu ke tang shi lu
lu pei zuo
..............
page:10-13
su liao chu cun tai yang neng
..............
page:87
ci shi yan ying zeng jia yi ge bu zhou kong qi zhan ju kong jian shi yan ( yi ) de fen xi
fei tie hua
..............
page:63
gao hao zi ran ke yan shi shi yan de ji dian si kao
shi wan rong
..............
page:52-53
da qi ya li shi yan cai liao xuan ze
cao
..............
page:61
wei lai liu da ke yan re dian
..............
page:87
xin shi ji hu huan sheng tai de yu jiang su sheng wu xi guo ji nan yang xue xiao kai she ren yu zi ran ke
lu wen long
..............
page:78-79
fang fei re qi qiu mo xing
he wen li
..............
page:71-72
wei ke xue qi meng jiao yu kai bi guang kuo tian di tan su ke ban zi ran jiao cai de jiao xue huan jing
tang xiao ming
..............
page:37-38
tan zi ran jiao yan
yi ai guo
..............
page:39
xi lie guan cha shou huo da hua de gou zao ke wai guan cha huo dong she ji
wang shu fen
..............
page:46-47
dian nao bu ke neng chao yue ren nao
yang xiong li
..............
page:1
21 shi ji de zi ran ke jiu jing shi shi me yang zi
..............
page:4
nong cun xiao xue zi ran jiao xue de guai zhang
guo yong xin
..............
page:29
wu shui ce suo wen shi
..............
page:83